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HAERDEN JOHANNES

Overview
  • Total Patents
    11
About

HAERDEN JOHANNES has a total of 11 patent applications. Its first patent ever was published in 1904. It filed its patents most often in United Kingdom, Austria and United States. Its main competitors in its focus markets electrical machinery and energy, materials and metallurgy and thermal processes are IMBERT PROCESS COMPANY, UPTON ELECTRIC FURNACE COMPANY and ELECTROMETALLURGIQUE DE MONTRI.

Patent filings in countries

World map showing HAERDEN JOHANNESs patent filings in countries
# Country Total Patents
#1 United Kingdom 9
#2 Austria 1
#3 United States 1

Patent filings per year

Chart showing HAERDEN JOHANNESs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Haerden Johannes 11
#2 Tillquist Theodor 1

Latest patents

Publication Filing date Title
GB191407452A Improvements relating to the Manufacture of Hollow Steel Bars.
GB191400570A Improvements relating to Electric Induction Furnaces.
GB191125681A Improvements relating to the Production of Hydrogen Peroxide.
GB191009897A Improvements relating to Electric Furnaces.
GB191007303A Improvements relating to the Reduction of Metals from their Oxides or other Compounds.
GB191003739A Improvements in or relating to Metallurgical Furnaces.
GB190926251A Improvements in and relating to Electric Furnaces.
US977303A Electric furnace.
GB190426919A Improvements in Arc Light Electrodes
GB190426918A Improvements in Arc Lamps and Electrodes therefor